Senna counters in Support on BR

Nami clearly beats Senna in Support: 56.6% over 302 games (BR Solo and Flex, all ranks, patch 26.20).

Patch 26.20

How we measure

Lane matchups

20 opponents with 100+ games

Se
Win rate50.2%48.9–51.5%
Games5,562Senna in Support

Clear edges

The 95% range stays off 50%

Win rate against Senna

Dot: win rate. Bar: 95% range. Hollow: even.

Every lane opponent

Win rate against Senna. Gold @15: opponent minus Senna.

Senna lane opponents in Support
OpponentEdge
ZyraEven12158.7%49.8–67.0%Even−103
KarmaEven19956.8%49.8–63.5%Even−511
NamiCounter30256.6%51.0–62.1%Counter−457
SorakaEven20054.0%47.1–60.8%Even−570
BlitzcrankEven13253.0%44.5–61.3%Even−365
LuluEven31151.8%46.2–57.3%Even−617
YuumiEven13151.1%42.7–59.6%Even−786
MilioEven23151.1%44.7–57.5%Even−623
LeonaEven16550.9%43.4–58.4%Even−272
LuxEven33550.7%45.4–56.1%Even−38
MorganaEven28250.0%44.2–55.8%Even−135
SeraphineEven34848.9%43.6–54.1%Even−177
JannaEven14548.3%40.3–56.4%Even−631
NautilusEven22948.0%41.6–54.5%Even−436
ThreshEven32347.7%42.3–53.1%Even−363
SwainEven13547.4%39.2–55.8%Even+116
PykeEven11247.3%38.3–56.5%Even−101
SonaEven11246.4%37.5–55.6%Even−648
Tahm KenchEven11746.2%37.4–55.2%Even−262
BrandBeaten11940.3%32.0–49.3%Beaten−221

Questions

Who counters Senna in Support?

Nami (56.6%, 302 games) clearly beats Senna in Support. BR Solo and Flex, all ranks, patch 26.20.

What is the best counter to Senna in Support?

Nami, with a 56.6% win rate over 302 games (95% range 51.0–62.1%) against Senna in Support. BR Solo and Flex, all ranks, patch 26.20.

What does Senna beat in Support?

Senna clearly beats Brand (59.7%, 119 games) in Support. BR Solo and Flex, all ranks, patch 26.20.

What is Senna's win rate in Support?

50.2% over 5,562 games (95% range 48.9–51.5%). BR Solo and Flex, all ranks, patch 26.20.

Which matchups are even for Senna in Support?

18 of 20 opponents with 100+ games, such as Seraphine, Lux and Thresh: their win rate range includes 50%, so neither side has a clear edge.